: Your plan will work, but don't use a compression fitting in the wall. You do need to take down or cut 2" X 4"'s unless absolutely necessary, don't create any more work than you need to.: Good Luck. e-plumber

E-plumber or anybody-

Is using PVC acceptable? And if so, how would you go about doing this if you were replacing just that supply line from the valve to the elbow up top?